Sewer-flush check-valve



(No Model.)

J. J. WADE. SEWER FLUSH' G'HEGK VALVE.

Patented Mar. 3, 1891.

wwm i=== Ii= m m l ..J|MM\IMPI.||II|I1/n// JAMES J. VADE, OF

SEWER-FLUSH Application filed April l2, 1890.

T0 @ZZ whom it may concern/.f

Be it known that I, JAMES J. IVADE, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in a Sewer -FlushCheck-Valve, which are fully set forth in the following specification,reference being had to the accompanying drawings, forming a partthereof.

The purpose of this invention is to provide a check-valve, incombinationwith the seweriiushing device patented to me by Letters Patent datedJuly 16, 1889, numbered 406,977, such valve to be adapted to,serve theordinary purpose of a check-valve in a sewer and being constructed insuch manner as to be readily applied in the same fitting which conrainsmy flushing device, and also being adapted to perform a special functionin respect to said iiushing device-viz., that when the flushing-streamis turned on to clear the pipe and there exists in the pipe beyond thestream such obstruction as prevents the immediate egress of theflushing-stream, causing it to back up, a check-valve, being closedbehind the entrance of the ushing-stream by the backing-up of the water,will permit the entire pressure of the Iiushing-stream-that is, theentire pressurefrom the water-supply to be exerted to eject theobstruction from the pipe.

In the drawings, Figure lis a vertical section longitudinally through aportion of a sewer-drain having my flushing device, the same being cutthrough the man-hole and Ventilating-ducts. Fig. 2 is a section at theline 2 2 on Fig. l, but with the valve removed,

showing the valve-seat in the pipe. Fig. 3 is a side elevation of theremovable valve-seat and valve hinged thereto. Fig. 4 is a faceelevation of the valve.

A is a section of a sewer, comprising a trap and having my iiushingdevice therein, and having a man-hole opening and Ventilatingopening onthe two sides ofthe trap, respectively, and having also twocheck-valves, one on each side of the ushing-jet opening.

A is the trap; A2, the man-hole opening; A3, a Ventilating-opening.

A4 is a iiushing-jet opening.

A5 is a check-valve back of the flushing-j et.

A6 is a check-valve forward of the tl'ush- NITED STATES PATENT OFFICE.

CHICAGO, ILLINOIS.

CH ECK-VALVE.

SPECIFICATION forming part of Letters Patent No. 447,387', dated March3, 1891.

Serial No. 347.706. (No model.)

and the form of said valves. For the purpose of affording a seat for thecheck-valve in the fitting A, I form an annular boss a therein, the samebeing shown at the seat of both of the valves A5 and A6. 1

I will iirst describe the construction by which the inner valve A5 isaccommodated in the fitting. At. the vicinityof the boss a", and for adistance somewhat more than the diameter of the valve-that is to say,than the in? terior diameter of the pipe-the fitting is extended to forma rectangular recess A7 at the upper side of the otherwise circularduct.A valve-seat B, which may be made of brass, is formed of the shape seenmost completely in Fig. 2, having the circular part adapted to fit ontothe annular boss a5, to which it will be secured by screws l), cementbeing employed to make its junction with the lboss watertight withoutdressing the face of the boss or the contacting-face of the seat B. Thisbrass seat B is extended from itscircular part upward into therectangular recess A7, but not the. ,full width or height of saidrecess, and at the upper corners of said rectangular extension it hasthe ears B B', proj ecting'laterally, which form the pivots of thevalve. The

valve C -is formed with lugs C C in form of hooks,'(best seen in Fig.3,) which fit upon the lugs B of the seat B. The valve and seat may bedressed to make a perfect lt of their' contacting-faces before beinginserted into the pipe and will be introduced thereinto through theman-hole and passed in horizontally at the full diameter of the pipe toreach the enlargement for the inner valve A5 and then turned up edgewiseand placed on the annular boss, whereupon the valve may be lifted andaccess obtained to the face of the valve-seat to insert the screws,whereby it is secured to the boss 'a5 on the pipe. When IOO thus inposition, the valve cannot escape from the pivots B, being preventedfrom lateral displacement both by the sides of the pipe and by theshoulders B10 on the valveseat, and being prevented from displacementupwardly by the upper wall A70 of the rectangular recess A7. I am thusable to make a very completely fitting valve and seat in very simpleform and attach it very readily to the fitting, no machine-work whateverbeing required upon the pipe-fitting itself. It will be observed thatthe corners between the annular boss c5 and the rectangular space of thecavity A7 accommodate the pivots of the valve, and that thereby there isavoided any necessity for enlarging the cavity vertically beyond themere thickness of the valve itself, because space for the hooks C whenthe valve is lifted is obtained at the sides of the circle which boundsthe boss a5. The valve An may be in all respects similarly formed andprovided with a similar-seat similarly secured in the pipe--that is, onthe annular boss d5 in respect to the valve Al-but being locatedimmediately below the man-hole the necessity for the rectangular recessto accommodate the valve when open does not exist. The function of thesetwo valves A5 and A6 is somewhat different, the valve A5 serving, asalready stated, to make the entire force of the flushing-j et availablefor forcing `out 0bstructions, while the valve A5 serves the purpose ofpreventing foul backwater from the sewer in any event entering thefiushing-pipe, which being connected with the pure watersupply might, ifit were open to backwater, be the aven ue through which the supply wouldbe contaminated. a

l. In combination with the sewerpipe provided with an induction for theiiushing jet or stream, a cheek-valve located back of the entrance ofsuch jet and adapted to close away from the same and to openautomatically with the normal iiow through the sewer, substantially asand for the purpose set forth.

2. In combination with the sewcr-pipe having an induction-orifice forthe f1 ushing stream or jet directed onward in the normal direction ofHow through the sewer, a check-valve interposed in the sewer-pipe inadvance of the liushing-jet orifice and in proximity thereto andstanding normally in range of the jet ejected from the orifice andadapted to close back toward said orifice, whereby backwater from thesewer is prevented by such valve from entering the ushing-pipe and thevalve is washed clean by the flushing-pipe, substantially as set forth.

3. In a sewer-pipe, a fitting A, having a ushingjet orifice A4 andprovided with an annular boss or shoulder a? back of said orifice, and arectangular recess A7 upon the up per side, and a Valve-seat B, adaptedto be secured upon the annular boss, and the pivots B', projectinglaterally in said rectangular recess, and the valve provided with thedownwardly-open hooks C' C', whereby it is adapted to be pivoted on saidpivots B', substantially as set forth.

4. In combination with the fitting having the interiorly-annular bossd5, the valve-seat B, adapted to be secured upon said boss and havingthe lugs B B', the valve C, having the hooks C C', whereby it is adaptedto be suspended on said pivots, saidpivots projecting iny the annularspace included between a hori- Zontal and two opposite vertical tan gents to the outer margin of the valve-seat, the said pipe having therectangular recess A7 at the upper side, the height of which above thehorizontal line of said pivots is less than the sum of the thickness ofthe valve and the diameter of the pivots, whereby the upper wall of saidrecess serves to retain the valve on said pivots, substantially as setforth.

In testimony whereof I have hereunto set my hand, in the presence of twowitnesses, this 5th day of April, A. D. 1890.

JAMES J. WADE. Titnessesz CHAs. S. BURTON, J EAN ELLIOTT.

